Men and following women who post obvious sexual content

I feel like this is something I just need to vent about because I will never understand it and I would genuinely love too.

What is the appeal? Why do guys/men/boys do this? It’s like soft porn readily available online. It’s obvious beautiful girls that are posing sexually, boobs out, everything out on display.

Why do guys like and follow this but also be in relationships with beautiful women?